Wire-nail machine.



HITS-SHEET 1.

PATENTED SEPT. 18, 1906.

H. E. SCHNABEL. WIRE NAIL MACHINE.

APPLICATION FILED AUG. 17. 1905.

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No, 881,109. PATENTED SEPT. 18, 1906. H. .E. SGHNABEL. WIRE NAILMACHINE,

APPLICATION FILED 11116.17, 1905.

6 SHEETSSHEET 2.

n4: NORRIS PETERS co., wAsumaraN. D c.

No; 831,109. PATENTED SEPT. 18, 1906.

H. E. SGHNABEL.

WIRE NAIL MACHINE. APPLICATION FILED AUG. 17, 1905.

6 SHEETS-SHEET 3.

rut NORRIS PETERS cm. wAsHmomN. n. o

PATENTED SEPT. 18, 1906.

H. B. SCHNABEL.

WIRE NAIL MACHINE. APPLICATION FILE-D AUG. 17. 1905.

8 SHEETS-SHEET 4.

PATBNTBD SEPT. 18, 1906.

H. E. SOHNABEL.

WIRE NAIL MACHINE.

APPLICATION FILED AUG.17, 1905.

6 SHEETS-SHEET 5.

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PATENTED SEPT. 18, 1906.

H. E. SOHNABEL.

WIRE NAIL MACHINE.

APPLICATION FILED AUG.17, 1905.

6 SHEETS-SHEET 6.

"lul -mun" UNITED STATES PATENT OFFICE.

WIRE-NAIL MACHINE.

Specification of Letters Patent.

Patented Sept. 18, 1906 Application filed August 17, 1905. Serial No.274,605.

To (Z6 whmn it may concern.-

Be it known that I, HERMAN E. SCHNABEL, of Chicago, in the county ofCook and State of Illinois, have invented certain new and usefulImprovements in Wire-Nail Machinc s, of'which the following is aspecification.

This invention relates to wire-nail machines, and has for its object toprovide an automatic mechanism which shall be compact, strong, simple,and self-contained, and by means of which wire nails may beautomatically and continuously manufactured from a continuous wire as itis drawn from the reel or coil, the machine being of a rotary characterand adapted to be run at a high speed, so as to insure a large outputWithout affecting the quality thereof.

To these ends the invention consists in certain novel features, which Iwill now proceed to describe and will then particularly point out in theclaims.

In the drawings, Figure 1 represents a front elevation of a machineembodying my invention. Fig. 2 is a side elevation of the upper portionthereof, comprising the straightening, feeding, and cutting and pointingmechanisms. Fig. 3 is a rear elevation of the portion of the structureshown in Fig. 2. Fig. 4 is a central vertical sectional view of thelower portion of the machine, the straightening, feeding, and cuttingand pointing mechanisms being omitted. Fig. 5 is an enlarged detail sideelevation of the cutting and pointing mechanism. Fig. 6 is a detailsectional. view taken on the line 6 6 of Fig. 5. Fig. 7 is a detail faceelevation of one of the cutting and pointing wheels. Fig. 8 is a detailview, in inverted plan, of the upper revolving disk, which carrics thenail-blank chutes.

Fig. 9 is a detail plan view of the revolving disk or wheel whichcarrics the nail-blankgripping dies, one pair of said dies being shownin place therein. Fig. 10 is a dctail plan view, partly in section andpartly broken away, of the rotating part which carries the heading-dies.Fig. 1 1 is a plan view, partly in section, of the base of the machine,showing in full lines the cam which operates the heading-dies andindicating in dotted lines the relative position of the cam whichoperates the nail-blank-gripping dies. Fig. 12 is a detail plan view ofthe cam which forces outward the nail-blank-gripping dies, the relativeposition of the cam which withdraws said dies being indicated in dottedlines. Fig. 13 is an inverted plan view of the device. Fig. 14 is adetail sectional view through the upper portion of the machine, taken ona line corresponding with the line 14 14 of Fig. 9. Fig. 15 is a detailplan view of the inner portion of the structure shown in Fig. 9. Fig. 16is a detail plan view of one of the segments of the outer portion ofsaid structure detached. Fig. 17 represents in end view and in partialplan one of the stationary nail-blank-gripping dies. Fig. 18 representsin end view and in plan one of the removable nail-blank-gripping dies.Fig. 19 is a side elevation of one of the nail-blankgripping diescarrying blocks detached. Fig. 20 is a plan view of the same detached.Fig. 21 is a view showing in elevation one of the nail-blanks after thesame is pointed and severed, but before it is headed; and Fig. 22 is asimilar view of the completed nail.

As shown in said drawings, the machine is mounted upon a suitable baseor support 25, the top or which forms a circular table 26, from whichthere extends upward a column or shaft 27 and upon which are mounted andsupported the various rotating parts of the machine other than thestraightening, feeding, and cutting and pointing mechanisms. Theselatter are supported on a fixed head 28, secured to the upper end of theshaft or pillar 27 by means of screw-bolts 29 or in any other suitablemanner and having a bracket 30 extending upward therefrom. Upon the topof this bracket are mounted the straightening devices 31, which may beof any approved construction, the form shown being a well-known onewhich does not require detailed description. Below these straighteningdevices there are located the continuously -rotating feed wheels orrollers 32, which are mounted on shafts 33 in suitable bearings in thebracket 30, said feed wheels or rollers consisting ofperipherally-grooved disks which grasp the wire between them as it comesfrom the straighteners and feed the same vertically downward to thecutting and pointing devices. Motion is imparted to these feed-wheels bymeans of pinions 34 and 35 on the rear ends of the shafts 33, saidpinions intermeshing with .each other and cam which withdraws thenail-blankgripping one of them being of double thickness.as,

for instance, the pinion 35-in order to mesh with a pinion 36 on therear end of a short shaft 37, mounted in the bracket 30 and having atits front end a beveled gear 38, which meshes with a correspondingpinion 39 on the upper end of a shaft 40. The shaft 40 is a verticalshaft mounted in suitable bearings in the pillar or fixed shaft 27 andhaving secured to its lower end a beveled pinion 41, Which meshes with asimilar pinion 42 on the main shaft 43 of the machine. This latter is ahorizontal shaft mounted in suitable bearings in the base or support andprovided at one of its projecting or overhanging ends with fast andloose pulleys 44 and 45, by means of which power may be applied to themachine from any suitable source by a belt or otherwise.

Below the feeding devices are located the cutting and pointing devicesby means of which the wire is severed into pieces of the proper lengthto form the nail-blanks and is at the same time pointed. This mechanismcomprises two cutter-carrying wheels 46, mounted on shafts 47, havingsuitable bearings in the head 28 and having at their rear ends pinions48 and 49, which mesh with each other, one of said pinions-as, forinstance, the .pinion 48being of double thickness and meshing with thepinion 36, by

- means of which rotary motion is imparted to the cutting and pointingwheels 46. Each of the wheels 46 has a plurality of radial slots orrecesses 50, in each of which is mounted and adjustable a cutter 51, andto this end each of said wheels preferably has a body portion composedof two parts divided in a plane transverse to the axis of rotation. Oneof these parts consists of a disk 52, formed in one piece with the shaft47, which latter is reduced as to its projecting portion beyond saiddisk and forms a polygonal hub or projection 53, having lateral planefaces 54, corresponding in number to the cutters. The other part 55consists of a similar disk, in the inner face of which the slots 50 areformed and which bears against the disk 52 and is secured thereto bymeans of screwbolts 56 or in any other suitable manner. The disk has acentral eye or opening 57, which is also polygonal in shape, having anumber of sides equal to the number of sides of the projection 53, saidopening being of reater diameter than said projection, therey leaving aspace or series of spaces between the said projection and the inner edgeof the. disk. There is thus formed what may be termed a polygonal slot58, within which is located a plurality of nuts 59 equal in number tothe cutting-dies 51 and arranged in radial lines with the same, beingheld from movement along said radial lines by the walls of the slot.These nuts may be adapted to be turned in any suitable manner, .and inthe present instance they are shown as provided with radial holes 60 toreceive the end of a suitable pin or key which vmay be inserted thereinto' turn said nuts.

Each of said nuts is threaded internally to receive a screw 61, theinner end of which extends into a suitable aperture 62, formed radiallyin the hub or projection 53, while its outer end extends into the radialslot or recess 50 and is transversely slotted, as shown at 63, said slotreceiving a corresponding rib 64 on a follower 65, arranged and fittingin the slot or recess 50 between the rear end of the cutter-die and thefront end of the screw 61. It will be at once seen that each one of thecutter-dies being provided with the adjusting mechanism just describedmay be readily, accurately, and independently adjusted, so as to cause1t to project beyond the periphery of the wheel by which it is carriedto exactly the proper extent. After adjustment each die may be securedby means of a bindingscrew 66, extending through the outer part 55 ofthe wheel 46 and servln by bearing against the edge of the die-bloc toclamp the same firmly against the disk 52.

The rib on the follower prevents rotation of the screw when the nut isrotated, and thereby causes the screw to move longitudinally to effectthe longitudinal adjustment of the die, while the provision of aseparate follower between the die and screw prevents the lateralpressure exerted by the bindingscrew upon the die from placing atransverse strain upon the adjusting-screw which might tend to cause itto bind.

The cutting edges of the dies are of an old and well-known form .incommon use, and are clearly shown in the drawings, requiring no detaildescription. When these cutters meet in pairs, as shown in Fig. 5, thenailblanks (shown in Fig. 21.) are severed from the wire and the pointof the nail is formed at the same time. It will be noted that the twocutting and pointing wheels are of equal diameter and rotate at the samespeed, so that the same pair of dies always cooperate, and by reason ofthis fact the dies of each pair having been once properly adjusted.relatively to each other will always meet in the same proper adjustment,whereas when different dies successively meet in pairs it is impossibleto obtain an accurate adjustment which will assure the proper meeting ofall of the dies.

Each of the wheels 46 is provided with a peripheral groove 67, thesegrooves being in the same plane with the cutting-dies and with eachother andserving in conjunction with. the projection of saiddies toguide and give a clearance to the wire as it passes between the wheelsor disks 46. The said wheels or disks 46 are also provided at or neareach. edge of their periphery with circumferential ribs 68, which extendradially outward beyond the faces of said wheels or disks to an extentabout equal to the extent to which the cutters project. Thesecircumferential ribs are substantially in contact with each other as thewheels rotate and serve to pre- ITO vent any excess of strain upon thecutters, 1 o

which latter are adjusted so as to project with their outermost portionseven with the outer faces of said ribs. The ribs thus further serve asguides for adjusting the cutters, and this adjustment may be facilitatedby placing a suitable straight-edge across the ribs and adj Listing thecutters to the straightedge. Below the pointing and cutting mechanismand in the line of feed of the Wire there is mounted on the head 28 astationary guide 69, through which the wire passes on its way to thechutes, by means of which it is delivered to the heading mechanism.

The heading mechanism as a whole rotates continuously around the columnor shaft 27 as an axis and consists, essentially, of an upper rotatingtable 70, which carries the nailblank-gripping dies, and a lowerrotating table 71, which carries the heading-dies, these two tablesbeing concentric, or, in other words, rotating around a common axis, andbeing preferably formed on or secured to the upper and lower ends,respectively, of a sleeve or tubular body 7 2, which is mounted on thecolumn or shaft 27, and which con nects and assures the synchronousmovement of the upper and lower die-carrying tables. In order to impartthis rotary movement to these parts, the die-carrying table 71 isprovided around the periphery of its base with a beveled gear 78, whichmeshes with a beveled pinion 74 on the shaft 43.

Referring first to the upper table 70, which carries thenailblank-gripping dies, which latter for convenience will behereinafter referred to merely as the gripping-dies, the same ispreferably constructed in the manner shown in detail in Figs. 4, 8, 9,14, 15, and 16. The upper part of thistable consists of a disk 7 5,which fits loosely around the column or shaft 27 or, as in theconstruction shown, around a fLxed sleeve thereon, which will behereinafter referred to, said disk being provided with a centralaperture 76 for this purpose. Around this central aperture there isformed in the under face of the disk 75 an annular recess 77 for thepurpose hereinafter set forth, and said disk is also provided at itsouter-margin with an annular i'lownwardly-projecting flange 78.

A series of vertically-extending apertures 7 9 are formed through thedisk 75 for the purpose of feeding the nail-blanks to the grippingdies,and the lower portion of each of said apertures is enlarged or elongatedradially with respect to the disk, as indicated at 80. Above each of thenail-receiving apertures 79 is lo cated a chute 81, having a passagetherethrough, as shown in dotted lines in Fig. 1 of the drawings at 82,which passage has an enlarged receivingmouth at its upper end, theforward wall whereof is inclined, while the rear wall is vertical, thelower part of each chute forming a vertical passage for the nailblank,which communicates directly with the upper end of the aperture 79. Eachaperture 79 has a corresponding chute 81, mounted on the upper side ofthe disk, the chutes being arranged in a circular series, so that theirupper ends or mouths are successively brought into the lineof feed ofthe wire or, in other words, immediately below the guide 69.

The lower portion of the upper table consists of a disk 83, the innerportion of which consists of an annulus or ring 84, formed on the upperend of the sleeve 72, while the outer portion is built up of a pluralityof segments 85, constructed in detail, as shown in Fig. 16 of thedrawings. The inner annulus 84 and upper disk 75 are secured together bymeans of bolts 86, passing through suitable apertures 87 in said upperdisk 75 and screwing into the body of the annulus 84. The outer segments85 and the disk 75 are connected together by means of screw-bolts 88,passing through apertures 89 in the disk 7 5 and screwing into therespective segments 85. The segments 85 and annulus 84 are firmlyconnected by means of interlocking annular ribs and grooves 90, as shownmore particularly in Fig. 14 of the drawings. The lower disk 83, whichis in its preferred form thus con stituted, is provided with a pluralityof radial slots 91, corresponding in numb er with the annular receivingchutes and apertures of the upper disk of the table, eight being shownin the present instance to accommodate a corresponding number of pairsof gripping-dies, al though it isobvious that this number may be variedas desired. In the radial slots thus formed are mounted thegripping-dies, which are in pairs, one pairbeing located in each slot,and the arrangement being preferably such that the outer die of eachpair is fixed, while the inner die is movable toward and from said outerdie to grip and release the nail-blank. The outer dies 92 are mounted,respectively, in the segments 85, which are radially slotted, as shownin Fig. 4, to receive said dies and are provided with set-screws 93 tobind said dies in position after adjustment. The adjustment of theseouter or fixed dies is effected by means of radial adjusting-screws 94,one for each die, extending from the outer part of each segment radiallyinward and bearing against the outer ends of the dies, so as to form afirm abutment, which may be adjusted to give correct position to theindividual dies and adjust them to compensate for wear. The workingfaces of the outer dies are constructed as shown in Fig. 17, beingprovided with a groove vertically formed in the face thereof, which isflaring at its upper part, as shown at 95, to receive the nail-blank,and which is notched or serrated at its lower part, as shown at 96, inorder to roughen the side of the nail to increase its holding power.

The movabl'e or inner dies are mounted within the slots 91 toward andfrom the fixed IIC' ITS

tion 100 which extends out over both dies and which is provided with avertical passage 101 therethrough, through which the nailblank is fed toits position between the dies. In order to actuate the movable dies,there is mounted upon the shaft or column 27 a fixed cam 102, whichin-theconstruction shown is formed upon the lower end of a sleeve 103,whichis keyed to saidshaft or column and which is the sleeve aroundwhich the disk 75 loosely fits. This fixed cam 102 is constructed asshown in detail in Fig. 12 of the drawings, havingfa portion of itsperiphery (indicated at 104) of small diameter and which may be termedthe release portion of the cam, a second portion 105 of somewhat largerdiameter, which may be termed the normal portion of the cam, and a thirdportion 106 of still greater diameter which may be termed the grippingportion of the cam. The movable die-carrying blocks are each providedwith a roller 107 to bear against the periphery of the cam and reducethe friction between the die-carrying blocks and said cam. The blocksmay obviously be held against the cam by spring-pressure; but I preferto. hold thempositively in contact by means of a second fixed cam 108,which corresponds in shape with the cam 102 and which, as shown indetail in Figs. 13 .and 14, is in the-form of a cam-groove in the underface of a disk secured to thesleeve 103 above the cam 102. A projectionor roller 109 on each die-carrying block engages this camgroove, andsince the two cams have their corresponding parts at proportionaldistances from the center, as indicatedin Fig. 12 of the drawings, it isobvious that as the table 70 is rotatedthe several die-blocks will bemoved outward in the radial slots in said table by means of the cam102and will be moved inward bymeans of the cam 108.

The movable dies 98 have theirworking faces grooved in the same manneras the fixed dies 92, said grooves having the fiaring upper portion 95.and the serrated lower portion already described.

Referring ,now to the lower table 7 l, which, as hereinbefore stated, ispreferably formed in one piece with the sleeve or body 72, said tablecarries the heading-dies, of which a plurality are employed, equal innumber to the gripping-dies just described. To this end the table 71 isprovided with a plurality of chambers or recesses 110, which are open attheir lower ends and in which are mounted the die-carrying blocks 111,which are capable of vertical movement in said chambers or recesses.This vertical movement is imparted to said die-carrying blocks by meansof a cam 112, which is a fixed camformed upon the table 26, over whichsaid blocks are carried by the rotation of the table 71. This cam has adepressed portion 113,,which comprises the greater portion of itscircumference, an upwardly-inclined portion 114, an elevated portion115, and a downwardlyinclined portion 116. The relative position ofthese cam-surfaces with those of thecam 102 are indicated in Fig. 11 ofthe drawings. In order to reduce friction, the die-carrying blocks 111are provided with antifrictionrollers 117, mounted on shafts 118 in thedieblocks, and in order to prevent said rollers from bending underpressure they are preferably constructed, as shown in Fig. 4 of thedrawings, of a plurality of disks, thealternate disks being providedwith central'hubs whereby the bodies of the disks are spaced apart.

Each of the die-carrying blocks 111 isprovided with a shank or stem 119,which extends u ward through a suitable aperture 120 in t he table 71,and intothis shank or stem is screwed the corresponding headingdie 121.Each of these heading dies has mounted upon its threaded lower portion alocking and adjusting nut 122, by means of which said die may not onlybe firmly secured and locked into ositionin the shank of thecarrying-block, ut may also be adjusted so as to regulate its distancefrom the gripping-dies above it. Each heading-die is arranged directlybelow and in the line; with the grooves in the faces of thecorresponding pair of gripping-dies. I also provide means to limit thedownward motion of the diecarrying blocks, and consequently of theheading-dies, and to this end I employ for each carrying-block a rod or'bolt 123, which passes loosely down through an aperture 124 in thetable 71, its lower end screwing into or being otherwise secured to thecarryingblock, while its upper projectingend has adjustably mounted uponit outside of the 11pper surface of the table 71 a nut or nuts 125,which by contact with the upper surface of said table serve to limit thedownward motion of the die-carrying block. It will be noted that eachheading-die is independently adjustable both as to its positionrelatively to the gripping-dies and as to its downward limit of motion.The upper surface of the table 71 is preferably inclined in adownwardand outward direction, as clearly shown in Fig. 1, in order that thenails may be readily discharged from the machine after being ,releasedfrom the dies.

The upward thrust of the heading-dies causes considerable strain andwearupon the to each other. In the construction shown said head isprovided with a lower section 28*, which has a screw-threaded connectionwith the upper section, by means of which said lower section may beadjusted to take up the wear upon its lower surface.

The machine thus constituted operates in the following manner: The wireis drawn continuously from the reel or coil and passing through thestraightening devices is fed, by means of the feed wheels or rollers 32,to the cutting and pointing wheels, where it is severed into blanks of aconsiderable length and the point fully formed at the moment ofseverance by means of the mechanism provided for that purpose, thedetailed construction and operation of which has already been described.The severed blanks pass successively from the cutters through the guide69 to the chutes 81. The table 70, which carries these latter, rotatesat such a speed that each blank is dropped singly into a chute, whichpasses beneath the guide 69 at the proper moment, and each chutereceives only a single blank. The flaring mouth of the chute adapts itto receive the blank and guide the same to the contracted lower portionof the passage 82, while the vertical rear wall of said passage serves,in conjunction with the fixed guide 69, to sever the blank fromthe-following blank in case the cutters may not have entirely severedit, whereby the blank may be left connected to the succeeding blank by athin fin or web of metal, which fin or web will be broken off if itexists by reason of the succeeding blank being held stationary in theguide 69, while the first blank is carried forward by the vertical rearwall of the chute. The nail-blank is conducted, by means of the passage82, to the corresponding aperture 79 in the disk 75, and through thisaperture and through the aperture 101 the blank is conducted to thespace between the gripping-dies, which are then separated, for thereason that the movable die-carrying block is in contact with the part105 of the cam 102, and the dies are sufficiently separated to permitthe blank to pass freely between them. The blank continues its downwardmotion until its lower or unpointed end comes in contact with the upperend of the heading-die, which latter is then depressed, owing to thefact that its carryingblock is traveling over the depressed portion 113of the cam 112. It will be seen that the adjustment provided fordetermining the downward limit of motion of the heading-die determinesthe amount of metal which shall project below the lower faces of thegrippingdies, and this amount of metal, which subsequently forms thehead of the nail, may be thus gradually regulated to the requirements ofeach case. As the table continues to rotate the movable gripping-die ismoved toward the fixed gripping-die by reason of the contact of itsroller with the ortion 106 of the cam 102, and the nail-blan is therebygripped and firmly held between the gripping-dies and at the same timeroughened or barred laterally. Continued rotation of the table causesthe roller 1 17 of the heading-diecarrying block to come into contactwith the incline 114 of the cam 112, and the headingdie is thus forcedupward, thereby forming the head of the nail, which is completed as thesaid carrying-block travels over the elevated portion 1 15 of the cam105. The heading-die is released. when the incline 116 of said cam isreached, and at the same time the release portion 104 of the cam 102 isreached by the roller of the movable gripping-die block, which latter ismoved inward away from-its fixed companion die by means of the cam 108.This inward movement of the gripping-die releases the completed nail,which is at the same time carried laterally inward along with thedie-block by reason of its engagement in the aperture 101. This inwardmovement is permitted by reason of the radially-elongated portion of theaperture 79 and carries the completed nail clear of the upper end of theheading-die, thereby permitting it to dro out of the machine. Theinclination of t 1e upper surface of the table 71 facilitates thisdischarge of the nail, and the parts are then brought into positionready to receive another nail-blank,

which is operated upon in the manner just described.

It will be seen that the machine is a rotary machine and is thereby adaited for continuous use at very high speed,'ti1e capacity being onlylimited by the rate of speed and the number of sets of dies employed.The independent adjustment of each set of dies assures accurate working,while the arrangement of the heading-dies concentrically with thegrippingdies causes each heading-die to always cooperate with the samepair of gripping-dies and permits the three dies of each set to beaccurately adjusted, whereas if these parts were so arranged that adifferent hcadingdie would successively cooperate with different pairsof gripping-dies accurate adjustment would be impossible. The sectionalconstruction of the upper revolving table ermits ready access to themoving parts an enables the parts of the table to be readily separatedand assembled for inspection or repair. The machine is furthermorecompact and durable and possesses other advantageous features ofconstruction and operation, which have been more specifically pointedout .in

the deatiled description of its component parts.

I claim 1. In a wire-nail machine, the cutter-disks, each provided witha lurality of radial slots, a cutter-die longitudinally movable in eachslot, a follower for each die, a screw engaging said follower and heldt-irom rotation thereby, an adjusting-nut for each screw held fromlongitudinal movement, and a set-screw for each die for locking the sameafter adjustment, substantially as described.

2. In a wire-nail machine, the combination with a fixed central shaft,of a horizontal rotary table provided with an outer series of fixedgripping-dies and an inner series of movable gripping-dies, and fixedcams on said central shaft for moving the latter series of dies towardand from theformer, substantially as described.

3. In a wire-nail machine, the combination with a rotary table havingouter fixed gripping-dies and inner movable gripping-dies, of chutes andpassages, whereby the nail-blank is guided to said dies, andradially-movable die-blocks carrying the inner dies and having aperturesthrough which the nail-blanks pass, substantially as described.

, 4. In a wire-nail machine, the combination with the upper rotary tablehaving a plurality of pairs of gripping-dies, of radially-movingdie-blocks carrying the movable dies of said pairs and provided withapertures through which the nail-blanks pass, and the lower rotary tableprovided with a plurality of heading-dies corresponding in number withthe pairs of gripping-dies and concentric with the fiXed gripping dies,substantially as described.

5. In a wire-nail machine, the combination with the upper rotary tablecarrying a plurality of pairs of fixed and movable grippingdies, of alower rotary table concentric with the upper table and provided with aplurality of vertically-movable heading-dies corresp onding in numb erwith the p airs of grippingdies, means for moving the movablegripplngdies toward and from each other, and means for moving theheading-dies toward and from the gripping-dies, substantially asdescribed.

6. In a wire-nail machine, the combination with the upper rotary tableand its grippingdies, of a concentric lower rotary table havin-gvertically-movable heading-dies corresponding in number with and locateddirectly below the'pairs of gripping-dies, and means for adjustablylimiting the downward motion of the heading-dies and thereby determiningthe amount of metal projecting below the grip ing-dies to form thenail-head, substantial y as described.

7. In a wire-nail machine, the combination with the upper rotary tableand its gri pingdies, of a concentric lower rotary tab e provided with aplurality of headingdies equal in number with the pairs of gripping-diesof the upper table, each heading-die being independently adjustabletoward and from its coacting pair of gripping-dies, substantially asdescribed.

8. In a wire-nail machine, the combination of a horizontal rotary tableprovided with a plurality of pairs of gripping-dies in its lower portionto hold the nail-blanks, its upper portion being provided with aplurality of apertures for the passage of the nails and with a pluralityof chutes above the apertures, means to head the nail-blanks while heldby said gripping-dies, and suitable feeding and pointing mechanism abovesaid chutes to feed the wire vertically downward thereto and to severand point the nail-blanks before delivering them to the chutes,substantially as described.

9. In a nail-machine of the character described, the combination withthe horizontal rotary die-carrying table having a plurality ofnail-blank-receiving chutes with vertical rear walls above the dies, ofcutting and pointing wheels located above the path of said chutes, and avertical guide arranged between said cutting and pointing wheels andsaid chutes, whereby imperfectly-severed blanks may be separated fromeach other, substantially as described.

HERMAN E. SCHNABEL.

Witnesses:

FREDERICK C. GoonwlN, S, T. MANN.

